Filter element suction head with antistatic effect

Abstract

The utility model relates to the technical field of filter element suction heads, in particular to a filter element suction head with an antistatic effect, which comprises a fixed tube and a lengthened tube, the lengthened tube is sleeved in the fixed tube, an end of the fixed tube is fixedly provided with a mounting port, a fixed block is fixedly mounted in the fixed tube, a filter element is inserted in the fixed block, and the filter element is fixed on the lengthened tube. A first protruding block is fixedly installed on the surface of the fixing block, and a positioning hole is formed in the side face of the first protruding block. According to the utility model, the mounting and fixing of the filter element are more efficient through the matching of the convex block I, the convex block II and the positioning column, the rotary drum is in threaded connection with the screw rod, and the positioning column can be rapidly driven by rotating the rotary drum to be accurately inserted into the positioning hole, so that the stable positioning of the filter element is realized; the fixed state of the filter element can be quickly released by reversely rotating the rotary drum, so that the operation is simple, convenient and quick, the assembly and disassembly time of the filter element is effectively shortened, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter core suction head technical field especially, relate to a filter core suction head with antistatic effect. BACKGROUND

[0002] Filter core suction head is the suction head with filter core, has the filtration function, is used in the pipettor, and the pipettor is the experimental instrument in biological research, and the number of its accessory suction head in the test is also very large, and the suction head on the market is basically made of polypropylene plastic, in addition, a small amount of additive is added in the manufacturing process of most suction heads. The announcement number: CN206483484U discloses a filter core suction head, the filter core suction head includes the body, the body is the tubular with both ends open, the body includes the sample adding section of lower part, the storage section of middle part and the adaptation section of upper part, the diameter decreases gradually from the adaptation section to the sample adding section, the diameter of the upper part of the sample adding section is greater than the diameter of the lower part, a circle of steps is equipped on the outside of the connection place of the storage section and the adaptation section, a circle of recesses is equipped on the inside of the adaptation section, the lower end of the sample adding section is a section of the insertion section of inverted conical shape, the length ratio of the storage section and the sample adding section in the axial direction is between 1:2. The utility model provides a filter core suction head with simple structure and high sample adding precision. But the above-mentioned technology when using, since the suction head is generally disposable, needs to throw away the suction head after using, cannot carry out secondary use, and the filter core on the suction head is generally fixed in the inner wall of the suction head, and the filter core is inconvenient to take out and replace, influences the normal use of the suction head, thereby reduces the use effect, and needs to be improved. UTILITY MODEL CONTENTS

[0003] The utility model aims at solving the technical problem in the above-mentioned background art.

[0004] The utility model adopts the following technical scheme: a filter core suction head with antistatic effect, including fixed pipe and lengthening pipe, the lengthening pipe is covered in the inside of fixed pipe, the end of fixed pipe is fixedly installed with installation mouth, the inside of fixed pipe is fixedly installed with fixed block, the inside of fixed block is inserted with filter core, the surface of fixed block is fixedly installed with no.

[0005] Preferably, the surface of the fixed block is provided with a positioning groove, and the surface of the filter core is fixedly installed with a positioning edge, and the positioning edge is inserted into the inside of the positioning groove. Here, the filter core can be accurately positioned in the fixed block, avoiding the filter core from shifting or loosening during use, and improving the installation stability of the filter core.

[0006] Preferably, the positioning post and the positioning hole are on the same axis, and the positioning post is inserted inside the positioning hole. This helps the filter element maintain good alignment inside the fixing block, ensuring structural stability, improving the accuracy of filter element installation, effectively reducing assembly errors, and extending service life.

[0007] Preferably, there are two sets of both the first and second protrusions, and the two sets of first and second protrusions are symmetrically distributed inside the fixing tube. This balances the stress on the filter element and other components, prevents structural displacement or deformation, improves the overall stability and durability of the structure, and enhances the robustness of the filter element.

[0008] Preferably, a sealing piston is fixedly installed on the surface of one end of the extended tube located inside the fixed tube, and the sealing piston is in contact with the inner wall of the fixed tube. This helps to prevent leakage of air or other substances and improves the sealing performance.

[0009] Preferably, a limiting groove is formed at the end of the fixed tube connected to the extension tube, and limiting strips are fixedly installed on the surface of the extension tube. The limiting strips on the surface of the extension tube slide within the limiting groove of the fixed tube. There are two sets of limiting strips, and the two sets of limiting strips are symmetrically distributed on the surface of the extension tube. Here, the sliding of the limiting strips on the extension tube within the limiting groove of the fixed tube helps control the movement range of the extension tube, prevents relative rotation between the extension tube and the fixed tube, and ensures the smoothness and safety of the operation of the extension tube.

[0010] Preferably, anti-slip rings are fixedly installed on the surfaces of both the fixed tube and the extension tube. This increases the friction between the surfaces of the fixed tube and the extension tube, making it easier for personnel to firmly grip the extension tube during operation.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0012] 1. In this utility model, the cooperation of the first and second protrusions with the positioning post makes the installation and fixing of the filter element more efficient. The threaded connection between the rotating drum and the screw allows the positioning post to be quickly driven by rotating the drum, so that it can be accurately inserted into the positioning hole, thereby achieving a stable positioning of the filter element. When disassembling, the filter element can be quickly released by rotating the drum in the opposite direction. The operation is simple and quick, effectively shortening the disassembly and assembly time of the filter element and improving work efficiency. In addition, the cooperation between the positioning edge and the positioning groove further ensures the accurate positioning of the filter element, avoiding the problem of unstable installation caused by offset during disassembly and assembly, and enhancing the convenience and reliability of the filter element suction head.

[0013] 2. In this utility model, the extension tube and the fixed tube achieve stable sliding through the cooperation of the limiting strip and the limiting groove, which avoids the extension tube from shifting or rotating during the adjustment process. At the same time, the anti-slip ring installed on the surface of the extension tube increases the friction during operation, allowing personnel to quickly adjust the overall length of the fixed tube and the extension tube to improve the applicability of the filter cartridge suction head. Attached Figure Description

[0014] Fig. 1 A schematic diagram of a filter cartridge suction head with antistatic effect is provided for this utility model;

[0015] Fig. 2 A cross-sectional view of a filter cartridge suction head with antistatic effect is provided for this utility model;

[0016] Fig. 3 A schematic diagram of a fixing tube for a filter cartridge suction head with antistatic effect is provided for this utility model;

[0017] Fig. 4 A schematic diagram of an extended tube for a filter cartridge suction head with antistatic effect is provided for this utility model;

[0018] Fig. 5 A schematic diagram of a filter cartridge with an antistatic effect is provided for this utility model.

[0019] Fig. 6 A cross-sectional view of a filter cartridge with an antistatic effect is provided for this utility model.

[0020] Legend:

[0021] 1. Fixing tube; 2. Mounting port; 3. Fixing block; 4. Filter element; 5. Positioning edge; 6. Positioning groove; 7. Protrusion No. 1; 8. Positioning hole; 9. Protrusion No. 2; 10. Positioning post; 11. Screw; 12. Rotary drum; 13. Extension tube; 14. Suction head; 15. Anti-slip ring; 16. Sealing piston; 17. Limiting groove; 18. Limiting strip. Detailed Implementation

[0022] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0024] Example 1

[0025] Please see Figs. 1-6 This utility model provides a technical solution: a filter cartridge suction head with antistatic effect, including a fixed tube 1 and an extension tube 13. The extension tube 13 is sleeved inside the fixed tube 1. A sealing piston 16 is fixedly installed on the surface of one end of the extension tube 13 inside the fixed tube 1. The sealing piston 16 fits against the inner wall of the fixed tube 1, which helps to prevent air or other substances from leaking and improves the sealing performance. An installation port 2 is fixedly installed at the end of the fixed tube 1. A fixing block 3 is fixedly installed inside the fixed tube 1. A filter cartridge 4 is inserted inside the fixing block 3. A positioning groove 6 is opened on the surface of the fixing block 3. A positioning edge 5 is fixedly installed on the surface of the filter cartridge 4. The positioning edge 5 is inserted into the positioning groove 6, which can accurately position the filter cartridge 4 in the fixing block 3, avoid the filter cartridge 4 from shifting or loosening during use, and improve the installation stability of the filter cartridge 4. A first protrusion 7 is fixedly installed on the surface of the fixing block 3. A positioning hole is opened on the side of the first protrusion 7. 8. A second protrusion 9 is fixedly installed on the surface of the filter element 4. A positioning post 10 is rotatably connected inside the second protrusion 9. A screw 11 is fixedly installed at one end of the positioning post 10 that passes through the second protrusion 9. A rotating cylinder 12 is threadedly connected to the surface of the screw 11. The positioning post 10 and the positioning hole 8 are on the same axis. The positioning post 10 is inserted into the positioning hole 8, which helps the filter element 4 to maintain good alignment inside the fixing block 3, ensuring the stability of the structure, improving the installation accuracy of the filter element 4, effectively reducing assembly errors, and extending the service life. There are two sets of first protrusion 7 and second protrusion 9. The two sets of first protrusion 7 and second protrusion 9 are symmetrically distributed inside the fixing tube 1, which can balance the force on the filter element 4 and other components, prevent structural displacement or deformation, improve the stability and durability of the overall structure, and enhance the firmness of the filter element 4. The inner walls of the fixing tube 1, the extension tube 13, and the suction head 14 are all coated with an antistatic coating.

[0026] Example 2

[0027] Please see Figs. 1-4 A limiting groove 17 is provided at the end of the fixed tube 1 that is connected to the extension tube 13. A limiting strip 18 is fixedly installed on the surface of the extension tube 13. The limiting strip 18 on the surface of the extension tube 13 slides in the limiting groove 17 of the fixed tube 1. There are two sets of limiting strips 18, which are symmetrically distributed on the surface of the extension tube 13. The sliding of the limiting strip 18 on the extension tube 13 in the limiting groove 17 of the fixed tube 1 helps to control the movement range of the extension tube 13, prevents relative rotation between the extension tube 13 and the fixed tube 1, and ensures the stability and safety of the operation of the extension tube 13. Anti-slip rings 15 are fixedly installed on the surfaces of both the fixed tube 1 and the extension tube 13, which increases the friction between the surfaces of the fixed tube 1 and the extension tube 13, making it easier for personnel to firmly grip the extension tube 13 during operation.

[0028] Working principle: The fixed tube 1 and the extended tube 13 are connected by a sleeve to form the main structure of the filter cartridge suction head. The extended tube 13 is located inside the fixed tube 1. A limiting groove 17 and a limiting strip 18 are provided at the connection between the fixed tube 1 and the extended tube 13. The limiting strip 18 is installed on the surface of the extended tube 13 and slides in the limiting groove 17 inside the fixed tube 1, thereby realizing the stable movement of the extended tube 13 and effectively preventing it from shifting or rotating. A sealing piston 16 is fixedly installed at one end of the extended tube 13. The sealing piston 16 and the fixed tube 13 are connected by a sealing groove 17 and a limiting strip 18. The inner wall of the fixed tube 1 fits tightly to ensure the airtightness of the internal space, preventing air or impurity leakage and maintaining the integrity of the filtration process. Furthermore, both the fixed tube 1 and the extension tube 13 are equipped with anti-slip rings 15 to increase surface friction, providing a more stable grip during manual operation. This allows for quick adjustment of the overall length of the extension tube 13 and the fixed tube 1, improving the applicability of the filter tip. The end of the fixed tube 1 has an installation port 2 for connecting to a pipette, ensuring smooth airflow into the internal space. The filter element 4 has a fixed block 3 inside the fixed tube 1. A positioning groove 6 is formed on the surface of the fixed block 3. A positioning edge 5 is correspondingly installed on the surface of the filter element 4 and is inserted into the positioning groove 6. A second protrusion 9 is installed on the surface of the filter element 4. The second protrusion 9 is rotatably connected to a positioning post 10. The positioning post 10 passes through the second protrusion 9 and is fixedly connected to a screw 11. The surface of the screw 11 is connected to a rotating cylinder 12 via threads. A first protrusion 7 is located on the surface of the fixed block 3 and corresponds to a positioning hole 8. When the rotating cylinder 12 is rotated, it drives the screw 11. The positioning column 10 moves synchronously with the positioning column 10, causing the positioning column 10 to extend from the inside of the second protrusion 9 and insert into the positioning hole 8 of the first protrusion 7. This achieves accurate positioning of the filter element 4 within the fixing block 3, preventing the filter element 4 from shifting or loosening during use, and ensuring the stability and continuity of the filtration operation. Since the inner walls of the fixing tube 1 and the extension tube 13 are coated with antistatic paint, the generation of static electricity can be effectively reduced, the adsorption of liquid on the inner wall can be reduced, the airflow channel can be kept unobstructed, and the impact of static electricity accumulation on the filtration effect can be effectively prevented.

[0029] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A filter cartridge suction head with antistatic effect, comprising a fixed tube (1) and an extension tube (13), wherein the extension tube (13) is sleeved inside the fixed tube (1), characterized in that: The fixed tube (1) has an installation port (2) fixedly installed at its end. The fixed tube (1) has a fixed block (3) fixedly installed inside. The fixed block (3) has a filter element (4) inserted inside. The fixed block (3) has a first protrusion (7) fixedly installed on its surface. The first protrusion (7) has a positioning hole (8) on its side. The filter element (4) has a second protrusion (9) fixedly installed on its surface. The second protrusion (9) has a positioning post (10) rotatably connected inside. The positioning post (10) has a screw (11) fixedly installed at one end that passes through the second protrusion (9). The screw (11) has a rotating cylinder (12) threadedly connected to its surface. The inner walls of the fixed tube (1), the extension tube (13), and the suction head (14) are all coated with an antistatic coating.

2. The filter cartridge suction head with antistatic effect according to claim 1, characterized in that: The surface of the fixing block (3) is provided with a positioning groove (6), and the surface of the filter element (4) is fixedly installed with a positioning edge (5), which is inserted into the positioning groove (6).

3. The filter cartridge suction head with antistatic effect according to claim 1, characterized in that: The positioning post (10) and the positioning hole (8) are on the same axis, and the positioning post (10) is inserted inside the positioning hole (8).

4. The filter cartridge suction head with antistatic effect according to claim 1, characterized in that: The number of the first protrusion (7) and the second protrusion (9) are both two sets, and the two sets of the first protrusion (7) and the second protrusion (9) are symmetrically distributed inside the fixed tube (1).

5. The filter cartridge suction head with antistatic effect according to claim 1, characterized in that: A sealing piston (16) is fixedly installed on one end surface of the extended tube (1) inside the fixed tube (1), and the sealing piston (16) is in contact with the inner wall of the fixed tube (1).

6. The filter cartridge suction head with antistatic effect according to claim 1, characterized in that: A limiting groove (17) is provided at one end of the fixed tube (1) that is connected to the extended tube (13). A limiting strip (18) is fixedly installed on the surface of the extended tube (13). The limiting strip (18) on the surface of the extended tube (13) slides in the limiting groove (17) of the fixed tube (1). There are two sets of the limiting strip (18), and the two sets of the limiting strip (18) are symmetrically distributed on the surface of the extended tube (13).

7. The filter cartridge suction head with antistatic effect according to claim 1, characterized in that: Anti-slip rings (15) are fixedly installed on the surfaces of both the fixed tube (1) and the extended tube (13).

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